What is the current water temperature in Holyhead?

Q: What is the current water temperature in Holyhead?

As of now, in Holyhead, the water temperature is 12.57°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United Kingdom > Holyhead

Water temperature in Holyhead

Detailed information about the current water temperature in Holyhead. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

54.6

°F

November 22, 19:07

Trend:

decreasing

Yesterday:

54.7°F

Tomorrow:

54.3°F

Sunrise:

07:55

Sunset:

16:13

Day Length:

8 h. 18 min.

Holyhead in November

Minimum:

47.7°F

Average:

48.7°F

Maximum:

50.3°F

Sea water temperature in Holyhead today

As of now, in Holyhead, the water temperature is 54.6°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is 0.4°F higher than the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 55.3°F on 2021, while the historical minimum was 52.6°F on 2019.

latest data

last year

The water temperature over the last two weeks displayed soome variability. While the two week average stayed close to the historical average, there were some days when the temperature was close to the maximum recorded over the past years. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 53.7°F, the minimum temperature may reach 53.2°F, and the maximum might stay at 54.3°F.

Daily water temperature in Holyhead

Date	Current Year actual* / forecast**	last year	10 years average
Nov 8	55.7°F	56.5°F	55.9°F
Nov 9	55.7°F	56.4°F	55.8°F
Nov 10	56.0°F	56.2°F	55.6°F
Nov 11	55.6°F	56.1°F	55.5°F
Nov 12	55.3°F	56.0°F	55.4°F
Nov 13	55.9°F	55.9°F	55.3°F
Nov 14	55.6°F	55.7°F	55.1°F
Nov 15	55.5°F	55.1°F	55.0°F
Nov 16	55.4°F	55.1°F	54.8°F
Nov 17	55.1°F	55.1°F	54.8°F
Nov 18	55.0°F	55.4°F	54.7°F
Nov 19	54.8°F	55.2°F	54.6°F
Nov 20	54.8°F	54.8°F	54.4°F
Nov 21	54.7°F	54.6°F	54.3°F
Nov 22	54.6°F	54.4°F	54.2°F
Nov 23	54.3°F	54.0°F	53.9°F
Nov 24	54.2°F	53.9°F	53.7°F
Nov 25	54.0°F	53.8°F	53.6°F
Nov 26	53.7°F	53.5°F	53.3°F
Nov 27	53.5°F	52.9°F	53.1°F
Nov 28	53.4°F	52.9°F	53.0°F
Nov 29	53.2°F	52.8°F	52.7°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Holyhead by month

In an average year, Holyhead offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Holyhead was recorded on August 29, 2025, reaching a 63.3°F. While the coldest temperature occurred on March 9, 2018, dipping to 43.0°F. The average readings by season are 48.6°F in Winter, 48.5°F in Spring, 58.0°F in Summer, and 57.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	53.1°F	19mi
Bangor	52.3°F	21mi
Conwy	51.2°F	33mi
Douglas	54.1°F	59mi
Aberystwyth	51.2°F	66mi

* current water temperature in this city

** straight line distance from Holyhead